【摘要】 目的:评价多层螺旋CT(MSCT)冠状动脉血管成像方法显示管腔≥50%狭窄的准确性,分析改善成像质量的方法。方法:对72例临床诊断或可疑冠心病的患者在心电门控下采用64层螺旋CT进行冠状动脉血管成像。其中56例在2周内行导管法冠状动脉造影。结果:本组56例与冠状动脉造影结果相对照,冠状动脉血管成像诊断≥50%血管狭窄的敏感性为91.5%,特异性为97.5%,阳性预测值为82.3%,阴性预测值为98.9%。结论:64层螺旋CT冠状动脉血管成像具有较高的敏感性和特异性,同时具有无创和简便的特点,可以作为临床对高危人群筛查的首选方法。更多还原

【Abstract】 Objective:The aim of our study was to evaluate the accuracy of 64-slice computed tomography(MSCT) for assessing significant stenoses(diameter reduction≥50%) of coronary arteries,and to analyse the methods improving the quality of imaging.Methods:In 72 patients with suspected coronary artery disease,ECG-gated MSCT angiography was performed with a 64-slice MSCT scanner.56 patients underwent both MSCT and invasivecoronary angiography in 2 weeks after MSCT scan.Results:Comparison between MSCT and CAG was made in the 56 patients who underwent both studies.Sensitivity,specificity and the positive and negative predictive values for the 56 patients were 91.5%,97.5%,82.3% and 98.9%,respectively.Conclusion:The sensitivity and specificity of 64-slice MSCT for the detection of significant coronary artery stenoses is higher.It can be considered as a valuable noninvasive technique for excluding coronary artery disease.更多还原